mPEG-MAC is widely utilized in the field of bioconjugation and drug delivery systems. Its primary application lies in modifying biomolecules, such as proteins and peptides, to enhance their stability and solubility in aqueous solutions. This modification is particularly beneficial in therapeutic applications, as it can prolong the circulation time of drugs in the bloodstream, reducing the frequency of dosing. Additionally, mPEG-MAC is employed in the development of hydrogels and other biocompatible materials, which are crucial for tissue engineering and regenerative medicine. Its ability to form covalent bonds with various substrates makes it a versatile tool in creating functionalized surfaces for medical devices and implants, improving their compatibility and performance in biological environments.